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Add 28/4 and 21/8

1st number: 7 0/4, 2nd number: 2 5/8

28/4 + 21/8 is 77/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8

    Next, find the equivalent fraction of both fractional numbers with denominator 8
  2. For the 1st fraction, since 4 × 2 = 8,
    28/4 = 28 × 2/4 × 2 = 56/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    21/8 = 21 × 1/8 × 1 = 21/8
  4. Add the two like fractions:
    56/8 + 21/8 = 56 + 21/8 = 77/8
  5. So, 28/4 + 21/8 = 77/8
    In mixed form: 95/8

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